OmniGraffle 3.21 for iOS improves compatibility with iOS 18 and iPadOS 18.

• App Icon — Added tinted version of application icon for iOS 18 and iPadOS 18.
• Toolbar — Restored the Undo and Redo toolbar buttons for iPhones.

OmniGraffle 3.20.1 fixes some bugs which were accidentally introduced in version 3.20.

• Flipped Images — Fixed a regression which could cause images to display upside down.
• Crash while Switching Tools — Fix a regression which could crash the app when switching between tools.

OmniGraffle 3.20 adds support for Omni Automation “Install Links.” This release requires iOS/iPadOS 16 or later.

• Omni Automation [Pro] — Omni Automation now supports “Install Links” for simplified Omni Automation plug-in installation.
• Cloud Storage Providers — Improved compatibility with linked resource folders stored in providers such as OneDrive.
• Stability [Pro] — Updated Omni Automation logic to avoid a frequent JavaScriptCore crash on iOS and iPadOS 17.

• Omni Automation — Fixed a bug that could sometimes prevent access to iCloud plug-ins.

OmniGraffle 3.19.1 fixes the toolbar used for iPhones running iOS 16.